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iOS

week 1 review

Target/Action, Outlets, Outlet Collections

Methods and Properties (aka instance variables)

Property Observer (didSet)

Array<Element>

MVC

value types (struct) and reference types (class)

initializer

Type (static) methods

lazy properties

for in loops

Dictionary<Key, Value>

Type conversion (eg. UInt32(anInt))

Optionals

Range

for i in stride(from: 0.5, through: 15.25, by: 0.3) {}

Tuple

let x: (String, Int, Double) = (“Hello”, 5, 8.5)

let (word, number, value) = x

print(word)

func getSize() -> (weight: Double, height: Double) { return(250, 80)}

let x = getSize()

print(“weight is \(x.weight)”)

Access Control

internal

private

private(set)

fileprivate

public: for framework only, call outside framework

open: for framework only, public and can subclass this